(a)[4]
Describe the reaction of sodium with cold water, and iron with steam. In your response, include the products formed and any observations that can be seen.
(b)[3]
Describe a practical way to investigate the rate of this reaction. You may include a labelled diagram.
(c)[1]
Fill in the table below by giving the sizes of the pieces in the first column.
(d(i))[2]
Describe the effect of temperature on the rate of this reaction.
(d(ii))[1]
Determine the rate of reaction at $60\,^{\circ}\text{C}$.
(e)[1]
Describe how the concentration of hydrochloric acid affects the rate of its reaction with iron.